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User Manual - Listen Technologies

1. CAT S Length of cable CAT 5 Length of cable Length of cable ue peigh Angle Angle eH Length of cable RG 58 Power in Length of cable CAT 5 LA 205 Power se Pi optional Power out LA 205 Power supp optional Power out Power in Power in Power in Power in Length of cable CAT S Length of cable CAT 5 Length of cable Length of cable peigh Heighf angle angle eH LA 205 Power s Pi LA 205 Power sem H1 optional optional ut Power in Power out Power in Power out Power in 9 o a 3 2 e 2 H Ze KE og a oz ER on a 92 3 a 9 2 zo g o Power in o gt Power in 2 D og 7 9 9 ei T w D u a E o o o SS o o 2 2 2 3 c 3 ght qnt peig peig le e And ang Supply LA 205 Power Supply LA 205 Power Supply al optional optional i Power in Power out Power In Power out Power in o E v a 3 2 ki U 8 i M Lo Oe ox Oe c2 Ei lt o 3 ei 2 e 2 8 o o Power in o 9 Power in 2 o og D 9 G 9 u w 8 3 E o o o Ex o o 2 2 2 s s YIIWNAN 3710HM u su 60 S H sU ENT IDEDA EN JHL SI 314V Ol GJqNNOU SAISDOTONHOAL ENS e CA E 9 2 aniuitHu x ER EI BEID H EN RK E 2 opp gual WI far kw LI w 40181184 X Ho g i 4BIHITHA xy WEN EI S BOLHITHA x Ey E h i BOLHMTHA a E E E 1 BOLHITHA o EH E 2 1 DLHA E elon ONILLAS AY1
2. Installation and Operation LT 82 Stationary IR Transmitter LA 140 Stationary IR Radiator LISTEN lie GINO NIE TO G INESS 2015 Listen Technologies Corporation All Rights Reserved For further details regarding use adjustment or programming of your Listen Technologies products visit our website at www listentech com support manuals or contact us at 1 801 233 8992 or 1 800 330 0891 2 Stationary Infrared Table of Contents Design Guide Infrared Technology Overview System Overview Designing a System Design Tools LT 82 Stationary IR Transmitter Specifications Block Diagram Quick Reference Page Setup and Operating Instructions Accessories for LT 82 LA 140 IR Radiator Specifications Quick Reference Page Setup Instructions LED Indications Mounting your Radiator Accessories for LA 140 Infrared Technology Overview Infrared or IR technology uses infrared light to transmit audio without wires This type of transmission is advantageous to RF transmission because it is secure it is not susceptible to RF interference and one receiver can be used for multiple rooms within a facility The transmitter accepts an audio signal and then frequency modulates an RF carrier at 2 3 2 8 3 3 and or 3 8MHz This carrier along with DC power to power the radiator is supplied to the radiator via cables The carriers are then radiated into the room using IR emitter diodes This is the same technology used by the remote control
3. Monitor 7dBu maximum impedance 10 ohms 100mW 32 ohms 3 5mm stereo Power Test Tone on off Channel up down Input Level Transmit Level Front Panel Contour Headset Level Controls Rear Panel Input 1 Level Line Mic Mic Phantom Power Input 2 Level 10 10 dBu Internal Adjustments Compression ratio for audio processor Programming Stereo on off Processing on off Unit Power Red LED illuminates when the unit is powered up front panel Indicates Input 1 Input 2 and Transmit audio levels 10 segment LED s 8 Input 1 Input 2 Transmit Level green 2 red Stereo Indicated by a green LED when on front panel indicators Processing Indicated bv a green LED when on front panel RF Carrier Indicates carrier is active on the LCD Displav front panel LCD Displav Channel designation lock status RF Carrier programming front panel Test Tone Red LED illuminates when test tone enabled front panel In line switching mode power supply Listen part number LA 205 Input 100 240 VAC 47 63 hz Power Supplv Output 30 VDC 1 5 A Output Connector RJ 45 Power Compliance UL and CE Listed Power Output Two 2 RJ 45 jacks For remote powering up to 2 radiators North America Type B LT 82 01 Power Line Cord Asia UK Type G LT 82 02 Euro type J LA 82 03 Dimensions H x W x D 1 75 x 8 50 x 9 13 in 4 5 x 21 5 x 23 cm Color Grey with White Silk Screening Unit
4. the radiator is prevented by securely attaching this cable to a base ie Connect CAT 5 and Coaxial cables Connect CAT 5 and Coaxial cables to appropriate locations on radiator 47 LA 140 Mounting your Radiator Ceiling Mountin Description Radiator is mounted on the ceiling with or without a wall box available for this use Pieces Used Wall Box Plate Hollow Wall Mounting Screws if attaching to wall box or Hollow Wall Anchors with Screws if attached to hollow wall Tilt Arm A e Tilt Arm B Tilt Bolt Mounting Hardware Screws Anchors with Wall Box Plate e d or 9 Tilt Bolt l Hollow Wall Anchors with Screws Wall Box Plate Mounting Screws 2 amp e Tilt Arm A Tilt Arm B Mounting Hardware Screws Installation Steps Ls Attach Wall Box Plate securely to ceiling Attach Wall Box Plate securely to ceiling n If using a wall box attach Wall Box Plate to wall box using included Mounting Hardware Screws If attaching directly to a hollow ceiling attach Wall Box Plate securely to ceiling using included Hollow Wall Anchors with Screws ATTENTION The Wall Box Plate must be used in this installation to provide a secure base for the radiator to be mounted on 48 LA 140 Mounting your Radiator E Attach Tilt Arm A Attach Tilt Arm A to Wall Box Plate Attach Tilt Arm A in such a manner that it sits across Wall Box Plate using Mounting Hardware Screws not up and
5. A in such a manner that it sits across Wall Box Plate not up and down on plate 41 42 LA 140 Mounting your Radiator ET Attach Tilt Arm B Attach Tilt Arm B to Swing Arm of radiator swing arm comes attached to rear of radiator using included Mounting Hard ware Screws Any of the seven holes in Swing Arm can be used for this Ed Pull CAT 5 and Coaxial cables through if necessary Pull CAT 5 and Coaxial cables through hole in Wall Box Plate El Determine correct angle Determine correct angle setting to use for the radiator see page 11 of designing a svstem D Attach Radiator to Wall Box Plate Attach Radiator to Wall Box Plate using Tilt Arm A and Tilt Arm B Use the Tilt Bolt to fasten the tilt arms together ATTENTION Note the angle measurements on Tilt Arm B and verify that the correct angle is selected before fully tightening Tilt Bolt LA 140 Mounting your Radiator Attach Safety Mounting Cable The radiator has a safety cable attached to the top of the swing arm This cable must be attached to a secure base to prevent the radiator from falling in the event of a mounting hardware component failing Possible injury to persons and damage to the radiator is prevented by securely attaching this cable to a base attach to a secure base g Connect CAT 5 and Coaxial cables Connect CAT 5 and Coaxial cables to appropriate locations on radiator 43 LA 140 Mounting yo
6. Compensation Calculator located in the back of this design guide The correct setting of the delay compensation is necessary only in systems where there is overlap in coverage between two or more radiators Write the delay setting on the System Layout Worksheet The delay setting for each radiator is determined using the calculator and as follows D Distance of Furthest Radiator DFR Determine which radiator is the furthest from the transmitter on one of the two daisy chains Calculate the distance from the furthest radiator to the transmitter and record it in the first column of the delay compensation calculator See example below ES Radiator Distance from Transmitter RDT For each radiator determine the overall distance from the transmitter to the radiator Record the value of each radiator in the RDT column See example below E cable Delay cD Determine and record the propagation delay of the coaxial cable being used For Listen coaxial cable the delay is 1 54 ns ft or 5 05 ns m This information can be obtained from the specification sheets supplied by the cable manufacturer D Calculate the delay setting for each radiator Now calculate the delay setting for each radiator using the Delay Compensation Calculator The calculator uses the following formula to determine the delay setting of each radiator Delay Setting DFR RDT x CD 25 NOTE If your calculations suggest a delay setting greater than nine please contact Listen
7. North America 1 801 233 8995 fax www listentech com Printed in the United States of America 2015 Listen Technologies Corporation All Rights Reserved 20150709
8. Technologies tech support for more information 1 801 233 8992 support listentech com Designing a System BELAY COMPENSATION CRLCULRTOR RADIATOR l 1 KA oksi ax egn RADIATOR l 2 SS ON e X gt T RADIATOR l 3 CnC X RADIATOR l 4 al KN Ka RABIATOR l 5 Come oo ee RADIATOR l 6 LJ a Ex ns Ft RADIATOR e 190 Ia X RADIATOR 2 2 71190712 0 X IRADIATOR 2 3 e LR X RADIATOR 2 4 4 XI LX JRADIATOR 2 5 P Lef RADIATOR 2 5 GJ XI LISTEN CABLE IS ROUNDED TO 1 54 ns ft 5 05 ns m WHOLE NUMBER 290000000000 Complete the system materials worksheet Complete the system materials worksheet that determines the quantity of each part number required for your system Use the Room and System Layout Worksheets to fill in this form found in the last section of this guide Di Transmitters Fill in the number of transmitters required Each transmitter includes a short piece 15 inches of RG 58 coaxial RF cable for multiple channel installation interconnections You do not need to order this cable EI Transmitter Rack Mounting Fill in the number of rack mounting kits required One rack mount kit can mount two LT 82 transmitters ie Radiators Fill in the number of each type of radiator required Each radiator comes with mounting brackets for most types of installation In addition the radiator comes with 25 ft 7 6 m of coaxial RF and CAT 5 power cables 15 16 Designing a System Radiator Mountin
9. Weight 2 6 Ibs 5 7 kg Physical Unit Weight with LA 205 Power Supply 3 8 Ibs 8 3 kg Shipping Weight 4 4 Ibs 9 7 kg One rack space height 1 2 rack space wide One or two transmitters can be Rack Mounting mounted in one rack space Optional rack mount LA 326 not included LT 82 Block Diagram POWER 3 5MM Stereo On CH Wort OO Red e LED lt t CHANNEL SELECT HEADPHONE Universal i Power Supply kl P 115 230VAC WER CH AAV Volume 50 60hz provided 30VDC 1 5A moO Power Supply O Down CPU Module Terminal Q _ Automatic Teen LCS Deel Tran revel Overload isten isplay e _ cals O Protection Backlit DC Out Compression Ratio internal adjustment RF l T N O 4 4 fi PA O Transmitter RF Board 4 4 Stereo Generator Pre emphasis i Processing OUT C3 4 l BNC Green i Green N EU Transmit d LEVEL Functions controlled by the CPU Module STEREO CONTOUR PROCESS Input 1 VU Meter Input 2 VU Meter input Level POT Front Panel 12VDC Input 1 Level Select Line Mic Mic phantom Pwr Input 2 Level Select 1OdBu 10dBu e e kd Female XLR 1 4 OO e Combo Con
10. down on plate Lei Attach Tilt Arm B Attach Tilt Arm B to Swing Arm of radiator swing arm comes attached to rear of radiator using included Mounting Hardware Screws It is recomended that the top hole of the radiator swing arm be used using included mounting hardware screws in this install g Pull CAT 5 and Coaxial cables through if necessary Pull CAT 5 and Coaxial cables through hole in Wall Box Plate I8 Determine correct angle Determine correct angle setting to use for the radiator see page 11 of designing a system 49 LA 140 Mounting your Radiator D Attach Radiator to Wall Box Plate using Tilt Arm A and Tilt Arm B Attach Radiator to Wall Box Plate using Tilt Arm A and Tilt Arm B Use the Tilt Bolt to fasten the tilt arms together ATTENTION Note the angle measurements on Tilt Arm B and verify that the correct angle is selected before fully tightening Tilt Bolt Aw Attach Safety Mounting Cable The radiator has a safety cable attached to the top of the swing arm This cable must be attached to a secure base to prevent the radiator from falling in the event of a mounting hardware component failing Possible injury to persons and damage to the radiator is prevented by securely attaching this cable to a base g Connect CAT 5 and Coaxial cables Connect CAT 5 and Coaxial cables to appropriate locations on radiator 50 LA 140 Mounting your Radiator Desk Ta
11. from a transmitter or radiator here amp RF Output Output RF signal to an additional radiator here 9 34 LA 140 Quick Reference No Connection Yellow This yellow LED indicates a coaxial cable fault If illuminated the radiator e is either not connected to a powered transmitter or another radiator Power Red This red LED is lit when there is power to the radiator Delay Compensation Switch q Adjust the amount of signal delay from the radiator here In single radiator systems the position of this switch does not matter in multiple radiator systems this switch must be set properly See page 36 Termination Switch If there is no RF being output from the RF Output connection this switch must be in the ON position Default ON Carrier Present Green This green LED is lit when there is signal present to the radiator During normal operation the red and green LEDs will be continuously lit unless SW1 is off Power Output Output power to an additional radiator here PWR OUT PWRIN Power Input Connect power here LED Indicator Shutoff Switch SW1 Controls LED indicators on front of radiator If switch is set to the OFF position LEDs will not light up on front of radiator Default ON Listen Mode SW2 If using a LA 140 Radia tor with another manufacturer s transmit ter modulator it is necessary to put this switch in the OFF position IMPORTANT Always ensu
12. use the same modulation frequencies 2 3 2 8 3 3 3 8 MHz I 3 System Overview There are three main components of any Stationary IR system the transmitter radiator emitter and receivers LT 82 Transmitter ran LA 140 Radiator A LISTEN LISTEN LR 44 LR 4200 IR Intelligent LR 5200 IR Advanced DSP IR Receiver Intelligent DSP IR Receiver Single Channel System A single channel system consists of one LT 82 transmitter and one or more radiators The diagram below shows such a system with one radiator The radiator is powered from the power supply at the transmitter This power supply can supply enough power for the LT 82 and up to two LA 140 radiators If you need more than two radia tors you will need more power supplies This is discussed later in this document Power is supplied from standard CAT 5 cable while RF from the transmitter is delivered using 50 ohm RG 58 coaxial cable The radiator is supplied with 25 feet 7 6 meters of CAT 5 and RG 58 coaxial cable LT 82 Stationary IR Transmitter LA 140 IR Radiator Power CAT 5 Cable RF RG 58 50 ohm Cable 4 IR LR 42 IR Stetho Receiver Mounting hardware for radiator included with radiator LISTEN LISTEN LR 4200 IR Intelligent LR 5200 IR Advanced LR 44 IR Lanyard Receiver DSP IR Receiver Intelligent DSP IR Receiver 4 System Overview Multiple Channel System A multiple channel system consists of two t
13. warranty that the use of such equipment for any purpose will comply with applicable laws and regulations The terms of the warranty are gov erned by the laws of the state of Utah In the first ninety days after purchase any defective product will be replaced with a new unit After 90 days Listen will at its own discretion either repair or replace transmitters and receivers with a new unit or a unit of similar type and condition Product that is not covered under warranty shall be repaired or replaced with a unit of similar type and condition based on a flat fee Contact Listen for details This limited warranty prices and the specifications of products are subject to change without notice Contacting Listen If technical service is needed please contact Listen Pre authorization is required before returning Listen products If products were damaged in shipment please contact the carrier then contact Listen for replacement or repair requirements payable by the carrier Listen s corporate headquarters are located in Bluffdale Utah U S A and are open Monday through Friday 8am to 5pm Mountain Time 14912 Heritage Crest Way Bluffdale Utah 84065 4818 1 801 233 8992 1 800 330 0891 North America 1 801 233 8995 fax support listentech com www listentech com 61 62 LISTEM T E C H N O EO GIES Listen Technologies Corporation 14912 Heritage Crest Way Bluffdale Utah 84065 4818 U S A 1 801 233 8992 1 800 330 0891
14. you are using a microphone or if you have a balanced connection such as from a professional audio mixer you can also use Input 1 for unbalanced connections Use Input 2 to connect to an unbalanced audio source EN If using Input 1 Connect the audio source s to one or both audio input connections Input 1 offers a choice of balanced XLR or 1 4 phono connector Plug vour microphone into Input 1 and move the input select switch to Mic for dynamic microphones or Mic PH Power for condenser microphones Plug your balanced or unbalanced audio source into Input 1 Use the following diagram XLR Wiring 1 4 Phone Wiring Balanced Unbolanced Tip Ring Sleeve D E Sleeve A e xN Input from P di Balanced Unbalanced Audio from Audio Audio Balanced Unbalanced Source Source Audio Audio Source Source Top Ring Top Ring Sleeve If using Input 2 Plug your unbalanced audio source into Input 2 and select the audio level switch for 10dBu or 10dBu to match the audio level coming from your equipment ATTENTION When using Input 1 and Input 2 simultaneously the audio signals will mix together Input 1 will mix with both left and right signals of Input 2 tel Test Tone if necessary To broadcast a test tone press the test tone button This helps to test receivers when no audio source is available 29 LT 82 Setup and Operating Instructions D Set Stereo and Process Features
15. 3a 318VO 40 Aviad NOGA E AE AAR DIE IRE YIJWNN YOLVIGVY SUL UII Ibs UBILHSUJAWND TI Abu iJi Q Q Q Q o o o 4 o 20 System Materials Worksheet Transmitters Stationary IR Transmitter Power Cord USA UK Euro part LT 82 01 LT 82 02 LT 82 03 Number Quantitv Universal Rack Mount Kit Mounts two LT 82 units Transmitter Rack Part LA 326 Mounting Number Quantitv Stationarv IR Radiator Color Grev White Radiators Part LA 140 GV LA 140 WH Number Quantitv IR Radiator Floor Stand Dual Radiator Mounting Bracket Radiator Mounting Part LA 342 LA 337 Options Number Quantity IR System Power Supply Geet USA UK Euro Radiator Power Supplies or Required Part LA 205 01 LA 205 02 LA 205 03 umber Quantity Cables length in feet BNC RG 58 Coaxial Cable Preassembled RF Part Number pisi RJ 45 CAT 5 Cable Preassembled Power Cable 1 Cable2 Cable 3 Cable4 Cable 5 Cable 6 Cable 7 Cable 8 Cable 9 Cable 10 Cable 11 Cable 12 Note Each radiator includes 25 feet 7 6 meters of RG 58 coaxial RF cable and CAT 5 power supply cable 21 LT 82 Package Contents LT 82 IR Transmitter LA 205 Power Supply LA 89 IR Interconnection Cable IR System Design Guide and User s Manual LT 82 Quick Reference Card LT
16. 82 IR Transmitter LA 89 IR Interconnection Cable LA 205 Power Supply Listen Configurations LT 82 01 North America LT 82 02 UK LT 82 03 Euro 22 LT 82 Specifications Architectural Specification The Stationary IR Transmitter shall be capable of broadcasting on four mono or stereo carriers 2 3 2 8 3 3 and 3 8 MHz Channel selection shall be capable of being locked Multiple transmitters shall be capable of being daisy chained together to transmit up to four channels simultaneously The transmitter shall have a timer that shuts off the carriers after 30 minutes when no audio is present at the transmitter The transmitter shall have a SNR of 60 dB or better The device shall have an audio frequency response of 63 Hz to 15 kHz 3db It shall have two mixing audio inputs one balanced XLR phone input and one unbalanced RCA input The device shall have the following audio controls input level transmit level contour level and stereo on off control The device shall have an audio processor that is capable of automatic gain control and limiting The transmitter shall provide power for up to two radiators over CAT 5 cable The LT 82 is specified pe atio 5 Carrier Frequencies Selectable 2 3 MHz 2 8 MHz 3 3 MHz 3 8 MHz Number of Channels Four channels Selectable one channel per transmitter mono or stereo Carrier Shut Offo Ee aed off when no audio is present for 30 minutes to preser
17. EN LR 4200 IR Intelligent LR 5200 IR Advanced DSP IR Receiver Intelligent DSP IR Receiver 15 el System Overview Key Concepts of Designing a Stationary IR System Each LT 82 transmitter used can power two LA 140 radiators Each LT 82 transmitter used can power up to two LA 140 radiators If you design a system that requires more radiators than the transmitters can power you need to order additional LA 205 power supplies Each LA 205 can power up to two LA 140 Radiators Up to four LT 82 transmitters can be interconnected to create up to a four channel system Up to four LT 82 transmitters can be interconnected to create up to a four channel system For the system there are two RF outputs provided for connection to the radiators Each of these two outputs is referred to as the Radiator Daisy Chain RG 58 coaxial cable is used to interconnect the RF in the radiator daisy chain You can connect as many radiators in the daisy chain as you need NOTE Adding additional transmitters will decrease radiator coverage Each radiator requires one RF RG 58 coax connection and one power CAT 5 connection Each radiator requires one RF RG 58 coax connection and one power CAT 5 connection The RF connection can come from a transmitter or from another radiator The power connection can come from either a transmitter a radiator or from a power supply as long as you don t exceed the capacity Listen Technologies has provided mount
18. EN Stereo and Process Mode Descriptions D Stereo Mode A stereo signal can be transmitted to the receivers Input 2 must be used if a stereo signal is desired and the stereo mode must be enabled on the transmitter ATTENTION If the transmitter is in stereo mode the receivers will need to be put into stereo mode Refer to the appropriate receiver manual for more information Eg Process Mode Process mode is used for Audio Gain Control AGC With the process mode enabled the LT 82 will automatically adjust for inconsistent signal input levels by raising or lowering the signal level accordingly to provide a consistent sound output level This feature should be used in applications where a consistent sound level is important and the input levels vary substantially Typically you would not want to engage the Process Mode when a speaker s emphasis is critical to the message they are conveying EH To Disable or Enable Stereo and Process Features D Transmitter is shipped to you with Stereo and Process disabled Your transmitter is shipped to you with Stereo and Process disabled B With the unit on press and hold the channel select Down button With the unit on press and hold the channel select Down button for eight seconds The program PGM icon will appear on the LCD Once in the program mode the Stereo and Process features can be turned on and off by pressing the channel select buttons Press the channel select Up button to toggle betwee
19. Stand Mountin Radiator is mounted on a tripod stand If Listen part number LA 337 is used the radiator can be mounted up to nine feet high 7 9 Tilt Bolt Universal Stand Nut Pieces Used Universal Bracket Universal Stand Nut Universal Bracket Tilt Arm A e Tilt Arm B e Tilt Bolt Mounting Hardware Screws ES Tilt Arm A Tilt Arm B Mounting Hardware Screws Installation Steps ls Attach Universal Bracket to tripod stand Attach Universal Bracket to LA 337 tripod stand using equipment included in LA 337 1 Tripod IN Attach Tilt Arm A Attach Tilt Arm A to Universal Bracket using included mounting hardware screws S 55 56 LA 140 Mounting your Radiator g Attach Tilt Arm B Attach Tilt Arm B to Swing Arm of radiator swing arm comes attached to rear of radiator using included mounting hardware screws The bottom hole in Swing Arm must be used for this install g Determine correct angle Determine correct angle setting to use for the radiator see page 11 of designing a system g Attach Radiator to Desk Mic Stand Attach Radiator to Desk Mic Stand using Tilt Arm A and Tilt Arm B Use the Tilt Bolt to fasten the tilt arms together ATTENTION Note the angle measurements on Tilt Arm B and verify that the correct angle is selected before fully tightening Tilt Bolt D Connect CAT 5 and Coaxial cables Connect CAT 5 and Coaxial cables t
20. X power cable amp 27 LT 82 Setup and Operating Instructions Select Operating Channel Select the operating channel Select the operating channel 1 4 For single channel systems any channel can be used In multi channel systems each transmitter must be on a different channel Down Button INPUT 2 ms 7 P Channel select buttons powek Up Button yi RF Off Channel Setting Information This channel does not have a carrier present however allows pass through from RF input to RF output This allows a channel to be disabled in a daisy chain but allows the system to still operate as the RF signal from the transmitter s before it will still pass through Note that the power RJ 45 with CAT 5 connectors will pass through in all conditions unit off channel or channels 1 4 RF Off Channel Setting vie After channels have been selected the transmitter s can be locked After channels have been selected the transmitter s can be locked on that channel by pressing and holding the Channel Select Up button for three seconds When locked a padlock icon will be displayed on the LCD see below Icon indicates channel is locked 28 LT 82 Setup and Operating Instructions Le Connect Audio Inputs The LT 82 has two audio input options Input 1 and Input 2 Input 1 is a balanced connection using either an XLR or 1 4 phono connector Input 2 has two unbalanced mixing phono connectors Use Input 1 if
21. adiator has been under rated to account for system degradation as the IR emitting LEDs age over time It is important to design the system based on these coverage patterns and not by trial and error The reason for this is that the coverage pattern will be stronger when the radiator is new A system that has adequate coverage today may not have adequate coverage in the future if not designed according to the specified coverage patterns of the radiator The maximum length of CAT 5 power cable CAT 5 power cable should never exceed 250 feet when powering two 2 LA 140 s from an LT 82 or 700 feet when powering one 1 LA 140 from an LT 82 The maximum length of coaxial RF cable Coaxial RF signal cable should never exceed 1000 feet from the source transmitter Designing a System LG Determine the number of audio channels You will need to order one LT 82 transmitter for each audio channel The Listen system can deliver up to four audio channels simultaneously Determine the room size and shape You should either measure the room or use the architect s plans to obtain this information Complete the room layout worksheet Complete the room layout worksheet found in the final section of this guide placing the location of the transmitters power supplies and radiators using the worksheet key The following factors will determine the coverage of the room EN Number of radiators and location Except in small rooms it is recommended that at
22. ble Mountin Radiator is mounted to a support bracket that can be set on any flat surface This is a flexible and non permanent mounting strategy Pieces Used yp Universal Bracket e Tilt Arm A Universal Bracket e Tilt Arm B Tilt Bolt e Tilt Bolt Mounting Hardware Screws Mounting Hardware Screws P Installation Steps Mi acne Fang Ls Attach Tilt Arm A Attach Tilt Arm A to Universal Bracket using included Mounting Hardware Screws Tilt Arm A can be attached to either side of the Universal Barcket or 2 Attach Tilt Arm B Attach Tilt Arm B to Swing Arm of radiator swing arm comes attached to rear of radiator using Mounting Harware Screws The bottom hole in Swing Arm must be used for this install 51 LA 140 Mounting your Radiator EN Determine correct angle Determine correct angle setting to use for the radiator see page 11 of designing a system 2 Attach Radiator to Desk Mic Stand Attach Radiator to Desk Mic Stand using Tilt Arm A and Tilt Arm B Use the Tilt Bolt to fasten the tilt arms together ATTENTION Note the angle measurements on Tilt Arm B and verify that the correct angle is selected before fully tightening Tilt Bolt A g Connect CAT 5 and Coaxial cables Connect CAT 5 and Coaxial cables to appropriate locations on radiator 52 LA 140 Mounting your Radiator Microphone Stand Mountin Radiator is mounted on a standard micr
23. ctor Preassembled specify length Pkg of 10 LA 70 CAT 5 Cable Specify length e LA 127 RG 58 BNC Connector LA 72 RJ 45 to RJ 45 CAT 5 Coupler 31 LA 140 Package Contents LA 140 Stationary IR Radiator IR Radiator Quick Reference Card 25 feet RG 58 Coaxial Cable 25 feet CAT 5 Power Cable IR Radiator Mounting Hardware Universal Bracket Tilt Arm A Tilt Arm B Tilt Bolt Corner Mount Bracket Wall Box Plate Wall Box Plate Mounting Screws Hollow Wall Anchors with Screws Mounting Hardware Screws Universal Stand Nut es L Corner Mount Bracket Mounting Hardware Screws Coaxial RG 58 25 feet CAT 5 25 feet Universal Bracket P g Tilt Bolt Tilt Arm A Tilt Arm B 9 Universal Stand Nut Hollow Wall Anchors with Screws Nu DD WW e yy Wall Box Plate Mounting Screws Wall Box Plate Listen Configurations LA 140 GY grey LA 140 WH white 32 LA 140 Specifications Architectural Specification The radiator emitter shall have a single carrier transmitting area of no less than 10 000 ft 929 m or greater for each radiator specified when used with specified LR 42 and LR 44 The radiator shall be powered via CAT 5 cabling and the RF from the transmitter shall be carried by 50 ohm coaxial cable The radiator shall have three indicating LEDs for power no carrier present and carrier present The radiator LEDs shall be deactiva
24. fy that the correct angle is selected before fully tightening Tilt Bolt Attach Safety Mounting Cable The radiator has a safety cable attached to the top of the swing arm This cable must be attached to a secure base to prevent the radiator from falling in the event of a mounting hardware component failing Possible injury to persons and damage to the radiator is prevented by securely attaching this cable to a base Q attach to a secure base g Connect CAT 5 and Coaxial cables Connect CAT 5 and Coaxial cables to appropriate locations on radiator LA 140 Mounting your Radiator Hollow Wall Mountin A hollow wall installation is not as preferrable as a wall box installation but can be done without problems The hollow wall installation still requires the Wall Box Plate to be used 4 ge Wall Box Plate J D Tilt Bolt Pieces Used Wall Box Plate Hollow Wall Mounting Screws lit ed Hollow Wall Anchors with Screws Tilt Arm B e Tilt Bolt Mounting Hardware Screws ad Qu Tilt Arm A Tilt Arm B Mounting Hardware Screws Installation Steps Ful Fasten Wall Box Plate to wall Fasten Wall Box Plate securelv to wall using Hollow Wall Mounting Screws ATTENTION The Wall Box Plate must be used in this installation to provide a secure base for the radiator to be mounted on E Attach Tilt Arm A Attach Tilt Arm A to Wall Box Plate using included Mounting Hardware Screws Attach Tilt Arm
25. g Options Since the radiator comes with most radiator mounting options there are only two additional choices D Dual radiator mounting The LA 342 dual radiator mounting bracket allows you to mount two radiators together vertically or horizontally This includes short lengths of coaxial RF and CAT 5 power cables ES Floor stand The LA 337 is a floor stand for portable applications Radiator Power Supplies Fill in the number and type of LA 205 power supplies required if any Cables From the System Layout Worksheet insert the cable lengths for the preassembled coaxial RF cables LA 391 and CAT 5 power cables LA 393 Ei Other Accessories For US customers Listen Technologies offers the ADA Compliance Signage Kit LA 304 This aids in complying with US ADA regulations Hemod gIVO M iouis 88 8 e or t v1 e cn A33 Jaausxy1oM JN0 AD7 wooy 17 System Layout Worksheet 18 optional One Channel LA 205 Power ade T Power out Power in LlPower out 1 RF out 2 Power in iPower out 2 Length of cable CAT 5 Length of cable CAT 5 Length of cable Length of cable RG 58 peigh Angle Length of cable RG 58 LA 205 Power optior Power o Power in pela ue Angle a o Gamm BE F Length of cable CAT 5
26. ing Harware Screws Use all four available holes to ensure a secure attachment Attach Tilt Arm A Attach Tilt Arm A to Corner Mount Bracket Determine correct placement of Tilt Arm A by holding Radiator up to Corner Mount Bracket and determining desired position in corner xe ER Attach Tilt Arm B Attach Tilt Arm B to Swing Arm of radiator swing arm comes attached to rear of radiator using included Mounting Hard ware Screws Any of the seven holes in Swing Arm can be used for this connection 45 LA 140 Mounting your Radiator Ig Pull CAT 5 and Coaxial cables through Pull CAT 5 and Coaxial cables through hole in Wall Box Plate if necessary D Determine correct angle Determine correct angle setting to use for the radiator see page 11 of designing a system Attach Radiator to Corner Mount Bracket Attach Radiator to Corner Mount Bracket using Tilt Arm A and Tilt Arm B Use the Tilt Bolt to fasten the tilt arms together ATTENTION Note the angle measurements on Tilt Arm B and verify that the correct angle is selected before fully tightening Tilt Bolt 46 LA 140 Mounting your Radiator g Attach Safety Mounting Cable The radiator has a safety cable attached to the top of the swing arm This cable must be attached to a secure base to prevent the radiator from falling in the event of a mounting hardware component failing Possible injury to persons and damage to
27. ing hardware for most LA 140 mounting situations To make it easy for you to design specify and install a system Listen Technologies has provided mounting hardware for most mounting situations including wall ceiling corner desk tripod and mic stands To double the radiation power you can vertically or horizontally mount two radiators together using the LA 342 dual radiator mounting brackets This includes coaxial RF and CAT 5 power cables It is possible that the RF signal arrives to different radiators at different times Due to the higher modulation frequencies it is possible that the RF signal arrives to different radiators at different times This delay can cause the IR carriers to add out of phase and cause the signal to drop out To solve this problem Listen Technologies has provided a delay compensation adjustment on each radiator This design guide will help you calculate the setting for this adjustment As the number of channels increases the effective radiated coverage declines As the number of channels increases the effective radiated coverage declines For example a two channel system will have half the coverage of a single channel system If is important to increase the number of radiators for multiple channel systems FAR The coverage patterns provide coverage of the system assuming no reflection The coverage patterns provided by Listen Technologies provide coverage of the system assuming no reflection In addition the r
28. is mounted too low the coverage pattern will be too small to provide sufficient long throw coverage If the radiator is mounted too high the required angle of the radiator will cause the radiation pattern to be compromised The best height of the radiator is about 16 ft 5 m from the floor kief Radiator Mounting Angle The mounting system for Listen Technologies LA 140 radiators allow you to mount the radiator in 15 degree increments The best angle depends on the shape of the room and the orientation of the radiator to the seats within the room In general mounting angles of 15 and 30 degrees provide the best coverage 11 Designing a System D Determine the number of radiators required Determine the number of radiators required based on the size and shape of the room Based on step two it is recommended that you draw the room out indicating the location of each radiator in the room and cable runs from the transmitter s and power supplies if any to the radiator We have provided the room layout worksheet for you to do this towards the back of this design guide See example below Room Layout Worksheet LT 82 LA 140 9 RG 58 signal E CAT 5 power 12 Designing a System D Complete the system layout worksheet Complete the system layout worksheet fo
29. least two radiators be used to ensure good coverage and minimal shading Listen Technologies radiators when used with Listen Technologies LR 42 and LR 44 receivers will cover approximately 10 000 ft 929 m for one channel as indicated in the diagram below note the coverage decreases as the number of channels goes up For two channels one radiator will cover 5 000 ft 465 m and for four channels one radiator will cover 2 500 ft 232 m2 When using LR 4200 IR LR 5200 IR receivers the approximate line of sight coverage increases to 40 000 ft 3716 m2 for one channel Horizontal Plane Footprint Pattern feet Coverage pattern shown in feet 50 40 30 20 20 30 40 50 n Lu ge wey ccs cR qe 599 X 35 ac M N K N AN A M N kl N H E S 1 e 1 LI 4TX Lamm iq TX D D Li D KA D v WA d WA i TA Ce s zt L iT x Lei a E ae ett MEME Le zen o 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 You should use the above coverage pattern to determine coverage of each radiator in your system not by trial and error The radiator will be stronger when new and therefore is under rated by 40 percent and the coverage pattern above accounts for this 40 percent degradation will occur after approximately 8 000 operating hours 7 Designing a System tal Polar Pattern Vertical Polar Pattern Designing a System It is a good idea to provide
30. ll allow the radiator to work with other manufacturers transmitters See page 37 for more information want to occasionally turn off one or more channels in a multi channel system but don t want to have to rewire the system every time do this Is this possible A Yes The transmitter should be placed on channel This does not add a channel to the system in your daisy chain however allows other channels to pass through See page 28 for more information 60 Compliance Warranty and Contact Information Compliance Information The following compliance information applies to the LT 82 LA 140 GY LA 140 WH LR 42 LR 44 and LA 350 This device complies with Part 15 of the FCC Rules Operation is subject to the following two conditions 1 This device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation This Class A digital apparatus complies with Canadian ICES 003 C These devices are RoHS compliant Warranty Listen Technologies Corporation Listen warrants its transmitters and receivers LT 82 LT 700 LT 800 LR 100 LR 42 LR 44 LR 300 LR 400 LR 500 LR 600 to be free from defects in workmanship and material under normal use and conditions for the useful lifetime of the product from date of purchase Listen warrants its Stationary IR Radiators LA 140 to be free from defects in workmanship and mate
31. my radiator and still have it function normally A Yes you can disable the LED indicators if you desire to do so Turn SW1 on the rear of the radiator to the OFF position See page 36 for more information Q What is the life span of the Listen LA 140 Radiator A The radiators will be degraded to 50 efficiency at approximately 10 000 operating hours The footprint specification provided by Listen Technologies has accounted for 40 of this degradation which occurs at approximately 8 000 hours This is equivalent to three years of operating at eight hours per day Q If one of the LEDs on a radiator fails how many LEDs will stop working A If a diode goes out the radiator has been designed to minimize the impact on the rest of the LEDs Worse case 12 diodes out of 84 stop working Q If l want to mount two radiators side by side can do this and what part to need to order A Yes this is possible and often times it is recommended You will need to order Listen Technologies part number LA 342 See page 57 for more information about the dual mounting bracket am using Non Listen receivers with Listen LT 82 Transmitters how do know which channel to use A Please see the LT 82 specifications page to determine the operating frequencies on page 23 am using a non Listen transmitter with a Listen LA 140 radiator what do need to know A It is important that SW2 on the rear of the radiator is switched to compatibility mode This wi
32. n Mode Switch SW2 If using a Listen LT 82 Transmitter with the Listen LA 140 Radiator leave this switch in the ON position If you are using the Listen LA 140 Radiator with another manufacturer s transmitter modulator set this switch to the OFF position IMPORTANT Ensure this switch is in the ON position whenever using the radiator with the Listen LT 82 Transmitter PWR OUT PWRIN Listen Mode Switch SW2 ES Front LED Indicators There are three LEDs located on the bottom center of the front of the radiator These LEDs are very useful for determining the current status of the radiator See below for possible LED combinations and how to interpret what the combinations mean ATTENTION The LEDs can be disabled using switch 1 located on the rear of the radiator If you believe there is power to the radiator but there are no LED indications on the front of the radiator switch 1 has likely been set to the OFF position Make sure switch 1 is in the ON position before attempting to check the status of the radiator DI Red LED The red LED is the Power On LED If the Red LED is lit the radiator has power Di Yellow LED This yellow LED indicates a coaxial cable fault If illuminated the radiator is either not connected to a powered transmitter or another radiator ped Green LED The green LED is the Signal Present LED If the green LED is lit the radiator is outputting an IR signal into the ro
33. n Process On and Off Press the channel select Down button to toggle between Stereo On and Off If the green LED is displayed on the front panel that feature is enabled Once you have enabled or disabled the features as desired let the transmitter exit the program mode by waiting five seconds 110 Set Auto Timeout Feature If 30 minutes passes without audio to transmitter the unit will stop sending a signal to the radiators When the L O icon is illuminated on the LCD and a period of 30 minutes passes without audio being input to the transmitter the unit will stop sending a signal to the radiators This is done to help conserve LED life on the radiators TE To disable or enable Auto Timeout Feature E Your transmitter is shipped to you with the Auto Timeout Feature enabled Your transmitter is shipped to you with the Auto Timeout Feature enabled B To disable the Auto Timeout Feature To disable the Auto Timeout Feature press and hold the down button while turning the unit on D To enable the Auto Timeout Feature To enable the Auto Timeout Feature press and hold the up button while turning the unit on 30 Accessories for LT 82 Accessories LA 326 Universal Rack Mounting Kit Will mount up to two LT 82 units LA 112 RG 58 50 Ohm Coaxial Cable Specify length LA 115 LA 391 RG 58 BNC to RG 58 50 Ohm Coaxial Cable BNC Coupler Preassembled specify length gem LA 393 LA 71 RJ 45 CAT 5 RJ 45 CAT 5 Conne
34. nector 2 Tip 3 Ring 1 Sleeve Mane ORIF Phono O Phono O INPUT 2 Mono Stereo 24 O Phono OO OUTPUT Mono Stereo 400Hz TEST TONE Test Tone Button Front Panel LT 82 Quick Reference Input Level Indicators Shows Input 1 amp and Input 2 levels e Transmit Level Indicator Shows mixed audio level e Process LED Indicates audio processing mode is active Input 1 and 2 Adjust audio input levels of Input 1 and Input 2 here Power ON OFF 6 RF Input Input additional RF signal here for multi channel systems e RF Outputs Output RF signal to radiator s and or additional LT 82 Power Input Connect power e supply here included Listen INPUT P AET 0 Stereo LED Indicates stereo mode is active e LCD Display y 0 PROCESS STEREO See LCD Display INPUT LEVEL TRANSMIT LEVEL CONTOUR quick reference e UM Monitor Jack A 4 Plug in a TEST TONE headset to monitor audio Test Tone Activates a tone to aid system setup Channel Select Up and Down Use to select channel Buttons also used for programming functions S contour Equalization adjustment boosts or cuts high frequencies Transmit Level Adjusts mixed audio levels POWER Input 1 Balanced input for connection of a line level or microphone accepts either a XLR or ta phono plug AUDIO OUTPUT OUTPUT INPUT 2 INPUT 1 E m O Z d DIL w m ojo MIC PH PWR I
35. nput 1 Level Switch Set switch for line or mic level e Phantom power available in Mic PH Power position e Input 2 Level Switch Set switch to match the level of your Input 2 source input 2 Audio inputs stereo or mono Audio Outputs Input 1 and Input 2 mixed audio outputs Power Outputs Can be used to power up to two radiators Channel Displav Displavs what channel the LT 82 is currently on RF output indicator Indicates transmitter is outputting RF Program Mode Indicates the unit isin program mode prog Lock Icon Indicates the unit is locked on current channel I 25 LT 82 Setup and Operating Instructions Unpack the Product Remove outer packaging and plastic cover Verify all components are present and no physical damage has occurred to the product E Mount LT 82 s in Rack if desired If rack mounting the transmitter s install the optional rack mount kit part LA 326 according to the instructions included with the kit Rack Mount with dual units installed D Interconnect Multiple LT 82s if necessary If installing more than one transmitter for multi channel applications it will be necessary to daisy chain the transmitters Connect RF output on first transmitter to RF input on second transmitter Continue daisy chaining up to four transmitters four channels D Connect LT 82 RF Signal to Radiator s Connect RF output on transmitter to RF input on radiator In multi channel systems c
36. o appropriate locations on radiator LA 140 Mounting your Radiator Dual Radiator Mounting It is possible to mount two Listen LA 140 Radiators either side by side or on top of each other using the LA 342 Dual Radiator Mounting Bracket sold separately The mounting strategy is very similar to all of the previous scenerios except you will be working with two radiators connected together The instructions for connecting two radiators together with the LA 342 bracket are included with the bracket After the two radi ators are connected together all of the above instructions are the same except when the above instructions say to attach tilt arm B to the radiator you will instead attach tilt arm B to the dual mounting bracket Vertical Horizontal 57 58 Accessories for LA 140 Sr LA 205 IR Extended Power Supply powers two LA 140 radiators Note You will only need the LA 205 if you are using more than two LA 140 radiators per LT 82 transmitter or if you wish to remote power the radiator s LA 112 RG 58 50 Ohm Coaxial Cable specify length A LA 391 RG 58 50 Ohm Coaxial Cable preassembled specifv length _ LA 393 RJ 45 CAT 5 preassembled specify length Accessories LA 342 s IR Dual Radiator Mounting Bracket for mounting two radiators vertically or horizontally includes RG 58 coaxial cable and CAT 5 cable to interconnect the two radiators LA 70 CAT 5 Cable specif
37. o four LT 82 transmitters and one or more radiators The diagram below shows such a system with two radiators The radiators are powered from the power supply from the first transmitter This power supply can supply enough power for the LT 82 and two LA 140 radiators If you need more than two radiators you can use the power from the other transmitters In this example the four transmitter power supplies can supply enough power for up to eight LA 140 radiators This is discussed later in this document Power is supplied from standard CAT 5 cable while RF from the transmitter is delivered using 50 ohm RG 58 coaxial cable Each radiator is supplied with 25 feet 7 6 meters of CAT 5 and RG 58 coaxial cable Up to 100 LA 140 radiators can be daisy chained together using RG 58 cable to provide Up to four LT 82 transmitters can sufficient IR power for most applications be daisy chained together using RG 58 cable to create LA 140 IR Radiator a multi channel system Power CAT 5 Cable RF RG 58 50 ohm Cable LA 89 RG 58 Multi carrier Interconnection Cable included 4 IR LR 44 IR Lanyard Receiver LA 140 IR Radiator Radiator Power Radiators can be powered from the LT 82 up to two radiators or an additional power supply LA 205 can power up to two radiators Radiator RF RF from the last LT 82 must be daisy chained from radiator to radiator LT 82 Stationary IR Transmitter a LISTEN LIST
38. of your TV set A receiver then receives the IR light and demodulates the carrier re Audio Source e 5 5 j Radiator Receiver When designing an IR svstem it is important to keep the following in mind In open space when there are no reflective surfaces IR is line of sight If the receiver cannot see light from the radiator it will not receive the audio signal It is important to provide sufficient IR coverage within a facility so users will not have drop outs of the IR signal This design guide will help you do this In facilities that have reflective and lighter colored surfaces the IR light will be reflected and you can achieve greater coverage For example when emitting in a very large room like an exhibit hall you will notice that you need to point the receiver directly at the radiator to pick up the signal However when the radiator is placed in a smaller room for example 50 ft2 14 6 m square with white walls you will experience much better coverage This is because the IR signal is being reflected in many different directions increasing coverage Listen Technologies systems use higher modulation frequencies that make the system less susceptible to light interference from fluorescent lights and other sources However the system is not immune from interference from sources that create IR light such as sunlight and plasma displays Listen Technologies products are compatible with other manufacturers who
39. om During normal operation the red and green LEDs will be on simultaneously unless defeated by SWI Red LED Yellow LED Green LED 37 Tees C Corner Mount Bracket Tilt Arm A Tilt Arm B Universal Stand Nut Mounting Hardware Screws 38 Mounting Hardware Pieces LA 140 Mounting your Radiator Overview There are several different configurations that the radiator can be mounted in All of them except for the Dual Radiator Mounting Configurations can be accomplished using the mounting hardware included with the LA 140 IR Radiator Kit the LA 342 Dual Mounting Bracket is not included with the kit but is required for mounting two radiators side by side Read through the following mounting strategies to determine which works best for your application and then follow the instructions for mounting NOTE The parts in this section are not shown to scale Wall Box Plate Universal Bracket Tilt Arm A Tilt Arm B Tilt Bolt Corner Mount Bracket Universal Stand Nut Wall Box Plate Mounting Screws 2 Hollow Wall Anchors with Screws 3 of each Mounting Hardware Screws 10 Security Cable attached to radiator JA Tilt Bolt Wall Box Plate Mounting Screws Hollow Wall Anchors with Screws Universal Bracket Wall Box Plate LA 140 Mounting your Radiator Wall Box Mountin The wall box mount is a preferred mounting option for the LA 140 IR Radiator The wall box mount allow
40. on nect the last transmitter in the daisy chain to the radiator s RF input See design guide for more information on connecting multi channel systems RF Signal on coaxial cable 26 LT 82 Setup and Operating Instructions Connect LT 82 Power to Radiator s if desired The radiator s can be powered by either the transmitter Power Output or remotely with a power supply LA 205 near the radiator If powering the radiator s with the transmitter connect the transmitter Power Output to the radiator Power Input with CAT 5 cable NOTE A maximum of two radiators can be powered by each LT 82 It is important not to exceed powering more than two radiators per transmitter or external power supply RF Signal on coaxial cable D Powering the LT 82 Di Plug the included power supply into the Power Input connection Plug the included power supply into the Power Input connection on the rear panel of the transmitter and then plug the power supply into an outlet ATTENTION Do not connect the LT 82 power supply to an outlet until all other power connections within the system have been made This helps to prevent power connection degradation radiator power on CAT 5 cable DI Press the Power button Press the Power button on the front panel of transmitter s to turn the unit s on FF Signal on coaxial cable Be sure to plug into LT 82 before connecting to power outlet radiator power on CAT 5 cable T
41. ophone stand Pieces Used Universal Bracket Universal Bracket Universal Stand Nut oe Universal Stand Nut Tilt Arm A Tilt Arm B Tilt Bolt Installation Steps ed Tilt Arm A Tilt Arm B Mounting Hardware Screws Ls Attach Universal Bracket to Mic Stand Attach Universal Bracket to Mic Stand using Universal Stand Nut 8 Microphone stand il A Attach Tilt Arm A Attach Tilt Arm A to Universal Bracket using included Mounting Hardware Screws Tilt Arm A can be attached to either side of the Universal Barcket Ke S Attach Tilt Arm B Attach Tilt Arm B to Swing Arm of radiator swing arm comes attached to rear of radiator using included Mounting Hardware Screws The bottom hole in Swing Arm must be used for this install 53 LA 140 Mounting your Radiator g Determine correct angle setting Determine correct angle setting to use for the radiator see page 11 of designing a system EN Attach Radiator to Desk Mic Stand Attach Radiator to Desk Mic Stand using Tilt Arm A and Tilt Arm B Use the Tilt Bolt to fasten the tilt arms together ATTENTION Note the angle measurements on Tilt Arm B and verify that the correct angle is selected before fully tightening Tilt Bolt Ie Connect CAT 5 and Coaxial cables Connect CAT 5 and Coaxial cables to appropriate locations on radiator 54 LA 140 Mounting your Radiator Tripod
42. optional Two Channel LA 205 Power m H Power out Power in Power out 1 RF out 2 Power in Power out 2 Length of cable CAT 5 Length of cable CAT 5 Length of cable Length of cable RG 58 peign Angle Length of cable RG 58 LA 205 Power optior Power o padi Power in pel peigh angle L E jp Length of cable CAT 5 Three Channel LA 205 Power Pn wora ri y 11 825 Power out Power in MPower out 1 RF out 2 Power in MPower out 2 Length of cable CAT 5 Length of cable CAT 5 Length of cable Length of cable RG 58 peigh e ang Length of cable RG 58 LA 205 Power optior Power o gadiat Powerin pela peigh 4 4 Z pF Length of cable CAT 5 Four Channel LA 205 Power seed H optional Power out Power in MPower out 1 RF out 2 Power in Length of cable CAT 5 iPower out 2 Length of cable Length of cable Length of cable RG 58 LA 205 Power optior Power o Bel diato Power in pelay M id uer peigh Angle wom Length of cable RG 58 Power in Length of cable CAT 5 LA 205 Power Seel T optional Power out LA 205 Power soppy H1 optional Power out Power in Power in Power in Power in Length of cable
43. or systems EJ Multiple Radiator Systems It is necessary to select the correct delay compensation switch setting for each radiator to ensure that each radiator transmits the same signal at exactly the same time in an overlapping multiple radiator system Not setting the delay compensation switch correctly will result in reduced coverage area for the system See designing a system page 14 for determining the correct delay compensation switch setting for each radiator in a multiple radiator system Delay Compensation Switch e D Set Termination Switch m Single Radiator Systems Always set the termination switch to the ON position in single radiator systems Di Multiple Radiator Systems Set the termination switch to the OFF position on all radiators that are outputting an RF signal to another radiator Set the termination switch to the ON position on the radiators that are not outputting an RF signal to another radiator Termination Switch Set LED Indicator Shutoff Switch SW1 If desired the three LED indicators on the front of the radiator can be disabled using this switch Set this switch to the OFF position towards the left side of the rear of the radiator to disable the LED indicators To enable the LED indicators set this switch to the ON position towards the right side of the rear of the radiator LED Indicator Shutoff Switch SW1 LA 140 Setup and Operating Instructions D Liste
44. over lapping coverage like in a sprinkling system of the signal whenever possible to ensure that the signal does not have drop outs In addition you should provide special radiator coverage for shaded areas such as under a balcony or in the front of a room where the front mounted radiators do not provide enough coverage The following diagrams illustrate these concepts In this example a total of four radiators one in each corner ensures good coverage at all locations and orientations Except in small rooms it is recommended that at least two radiators are used to prevent shading of the IR signal lo Designing a System If there is an area within a room such as under a balcony that is a shielded from the main radiation pattern you will need to provide 7 07 additional radiator s to cover this area 10 Designing a System To double the radiator power it is possible to vertically or horizontally mount two radiators together using the LA 342 Dual Radiator Mounting Bracket sold separately This is highly recommended in larger rooms FT ES s EJ Height of Radiators It is critical to mount the radiators at the proper height If the radiator
45. put power from the radiator Make sure to always design the system using the footprint specifications found in the design guide Also in a multi radiator application the delay switch settings may be incorrect The radiators could be out of phase and therefore canceling each other out Make sure to set up the delay compensation switch correctly refer to page 14 for further information The audio sounds distorted in my receivers The receiver may be approaching the edge of the coverage pattern where the distortion and noise can be higher Also if the receiver is within 10 feet of the radiator it can cause the receiver to be saturated with IR It is a good idea to have a minimum distance of 10 feet from any radiator There is a tone in the audio Make sure the test tone button on the transmitter is OFF Also make sure that two transmitters are not on the same channel in a multi channel system 59 Frequently Asked Questions Frequently Asked Questions Q How many radiators can an LT 82 power A Up to two radiators can be powered using an LT 82 You must use an external power supply LA 205 for more radiators Q How many radiators can an LA 205 power A Up to two radiators can be powered using an LA 205 external power supply What do the LEDs on the front of my radiator tell me A Refer to page 37 for detailed information about the LED indicators on the front of the LA 140 Radiator Q Can turn off the LEDs on the front of
46. r Power and RF cable lengths delay compensation required number of power supplies and height and angle of radiators Refer to the system layout worksheet example below System Layout Worksheet One Channi 13 14 Designing a System 5C Cross out the LT 82 transmitters Cross out the LT 82 transmitters not required in your system Determine how many radiators will be used Determine how many radiators will be used on each radiator daisy chain by reviewing the room layout worksheet Cross out the unused radiators on the system layout worksheet Write in the coaxial RF cable lengths for each radiator Write in the coaxial RF cable lengths for each radiator used in the spaces provided Review your room layout worksheet for this information Draw a connecting line from the power supply output Draw a connecting line from the power supply output of the LT 82 transmitter s and the LA 205 power supplies to each of the radiators Keep in mind that each transmitter and power supply can power up to two LA 140 radiators Cross out the unused power supplies Cross out the unused power supplies Write in the CAT 5 power supply cable lengths Write in the CAT 5 power supply cable lengths for each radiator used in the spaces provided Review your room layout worksheet for this information Determine the delay compensation for each radiator Now determine the delay compensation for each radiator using the Delay
47. re SW2 is in the on position when using a LT 82 transmitter Default ON LA 140 Setup and Operating Instructions Unpack the Product Remove outer packaging and plastic cover Verify all components are pres ent and that no physical damage has occurred to the product A Mount Radiator ES Determining Location Generally a higher location with a clear line of sight to the area the receivers will be used in is recommended Refer to the design guide for detailed instructions about determining the location to mount the radiator s EJ Mounting in Desired Location See Mounting your Radiator section on page 38 for detailed instructions on mounting your radiator Connect RF Signal Each radiator must be supplied an RF signal on RG 58 coaxial cable The RF cable can originate either from an LT 82 Transmitter or from a different radiator Connect the RF signal to the radiator RF Signal on coaxial cable Connect Power Each radiator must be supplied DC power via CAT 5 cable One LT 82 Transmitter can power up to two radiators also up to two radiators can be powered using an IR Extended Power Supply Listen part number LA 205 Connect DC power to the radiator RF Signal on coaxial cable Radiator power on CAT 5 cable 35 36 LA 140 Setup and Operating Instructions D Set Delay Compensation Switch EN Single Radiator Systems The position of the delay compensation switch does not matter in single radiat
48. rial under normal use and conditions for three years from the date of purchase Listen warrants its Noise Canceling Microphone LA 270 to be free from defects in workmanship and material under normal use and conditions for one year from date of purchase Listen warrants its Charging Carrying Cases LA 306 LA 311 LA 313 LA 317 LA 318 LA 319 LA 320 LA 321 LA 322 LA 323 LA 324 LA 325 LA 350 to be free from defects in workmanship and material under normal use and conditions for one year from date of purchase All other products and accessories are warranted for 90 days from date of purchase This warranty is only available to the original end purchaser of the product and cannot be transferred Warranty is only valid if warranty card has been returned within 90 days of purchase This warranty is void if damage occurred because of misuse or if the product has been repaired or modified by anyone other than a factory authorized service technician Warranty does not cover normal wear and tear on the product or any other physical damage unless the damage was the result of a manufacturing defect Listen is not liable for consequential damages due to any failure of equipment to perform as intended Listen shall bear no responsibility or obligation with respect to the manner of use of any equipment sold by it Listen specifically disclaims and negates any warranty of merchantability or fitness of use of such equipment including without limitation any
49. s secure mounting of the radiator as well as for allowing the necessary cables to be placed inside the wall Pieces Used Wall Box Plate Mounting Hardware Screws Tilt Arm A Tilt Arm B e Tilt Bolt Mounting Hardware Screws Wall Box Plate Tilt Bolt Wall Box Plate Mounting Screws ZA Installation Steps Tilt Arm A Tilt Arm B Mounting Hardware Screws E Screw Wall Box Plate to wall Screw Wall Box Plate to wall box using included Mounting Hardware Screws e ES Attach Tilt Arm A Attach Tilt Arm A to Wall Box Plate using included Mounting Hardware Screws Attach Tilt Arm A in sucha manner that it sits across Wall Box Plate not up and down on plate Attach Tilt Arm B Attach Tilt Arm B to Swing Arm of radiator swing arm comes attached to rear of radiator using included Mounting Hardware Screws Any of the seven holes in Swing Arm can be used for this 39 40 LA 140 Mounting your Radiator EN Pull CAT 5 and Coaxial cables through if necessary Pull CAT 5 and Coaxial cables through hole in Wall Box Plate g Determine correct angle Determine correct angle setting to use for the radiator see page 11 of designing a system D Attach Radiator to Wall Box Plate Attach Radiator to Wall Box Plate using Tilt Arm A and Tilt Arm B Use the Tilt Bolt to fasten the tilt arms together ATTENTION Note the angle measurements on Tilt Arm B and veri
50. ted after 30 minutes if there is no audio signal present from the transmitter The radiator shall come in a white or grey color and shall include all of the mounting hardware capable of mounting the radiator on a wall on a ceiling in a corner on a desk on a mic stand or on a tripod The Listen LA 140 is specified Specifications LA 140 RF Termination Switch Delay Compensation Switch Indicator LEDs on Controls User Controls off Listen Mode Red LED Indicates power is present Yellow LED Indicates no connection to transmitter or radiator Indicators Green LED Indicates carrier and power are present and radiator is emitting IR signal RJ 45 connector 30VDC powered from transmitter via CAT 5 cable or Input optional LA 205 power supply RJ 45 connector 30VDC powers up to one additional radiator Power Gren Maximum two 2 radiators powered from each LT 82 transmitter or Eau LA 205 power supply Emitter Power 3 Watts Dimensions H x W x D 5 50 x 8 00 x 2 60 in 140 x 203 x 66 mm LA 140 GY Grey LA 140 WH Whit Physical Unit Weight 2 1 Ibs 95 kg Unit Weight with Wall Ceiling 2 35 Ibs 1 05 kg Mounting hardware Shipping Weight 4 0 Ibs 1 8 kg Temperature Operation 10 C 14 F to 40 104 F Environmental Temperature Storage 20 C 4 F to 50 122 F 0 to 95 relative humidity non condensing eSpecifications are subject to change without notification 33 RF Input Input RF signal
51. ur Radiator Corner Mountin The radiator is mounted in the corner of a room with or without a wall box available for this use A wall box must be at least four inches from the corner if using for this install Pieces Used Wall Box Plate Mounting Hardware Screws if attaching to wall box Hollow Wall Anchors with Screws if attaching to hollow wall Corner Mount Bracket Mounting Hardware Screws f Tilt Arm A N Tilt Arm B JA Tilt Bolt Wall Box Plate d Tilt Bolt Zn Hollow Wall Anchors with Screws Corner Mount Bracket om Tilt Arm A Tilt Arm B Mounting Hardware Screws Wall Box Plate Mounting Screws Installation Steps E Fasten Wall Box Plate to wall Attach Wall Box Plate securely to wall IMPORTANT Wall Box Plate must be at least four inches from corner to ensure corner bracket will fit in corner If using a wall box wall box must be four inches from corner attach Wall Box Plate to wall box using included Mounting Hardware Screws D If attaching directly to a hollow wall Wall Box Plate must be installed four inches from corner attach Wall Box Plate securely to wall using included Hollow Wall Mounting Screws ATTENTION The Wall Box Plate must be used in this installation to provide a secure base for the radiator to be mounted on 44 LA 140 Mounting your Radiator Attach Corner Mount Bracket Attach Corner Mount Bracket to Wall Box Plate using included Mount
52. ve Frequency Accuracy 005 stability 0 to 50C RF Transmitter Stability 50 PPM RF Output Two 2 BNC connectors for connection to radiator s and or additional transmitter s 50 mV 50 ohm 15 dBm RF Input One 1 BNC connector for connection from additional transmitter s 50 mV 50 ohm 15 dBm Compliance FCC Part 15 Industry Canada CE ROHS All system specifications are wireless end to end System Frequency Response 63Hz 15kHz 3dB 3 f Mono 260dB Svstem Signal to Noise Ratio A weighted Stereo gt 52dB Svstem Distortion lt 2 total harmonic distortion THD Mono Input Rear Panel Female XLR and 1 4 in combo connector balanced 0 55dBu line mic nominal input level adjustable 30 21dBu mic line Audio Input 1 maximum input level impedance 20k 1k ohms line mic phantom power 12VDC Stereo or Mono Input Rear Panel Two Phono connectors unbalanced Audio Audio Input 2 10 10dBu nominal input level adjustable 30dBu maximum impedance 100k ohms Audi Compression can be turned on off Slope adjustable from 1 1 to 4 1 Default udio Processing 21 Contour Cuts and boosts frequencies above 5 kHz Input 1 and Input 2 Mixed Output Rear panel Two 2 Phono connectors Combined Audio Output Mix unbalanced 10dBu nominal output level 19dBu maximum impedance 10 ohms Front panel One 3 5mm connector unbalanced adjustable output level Headphone Output
53. y length D LA 127 RG 58 BNC Connector LA 115 RG 58 BNC to BNC Coupler LA 71 RJ 45 CAT 5 Connector Pkg of 10 ta LA 72 RJ 45 to RJ 45 CAT 5 Coupler Troubleshooting Troubleshooting I believe my radiator has power but none of the LEDs on the front are on SW1 has been turned OFF Turn this switch to the ON position for verification of power and carrier My radiator is not radiating a signal If there is no audio at the transmitter for 30 minutes the radiator s will stop radiating to conserve the life of the radiator diodes When the audio returns the radiators will return to normal operation There is not sufficient range in my system It may be necessary to add additional radiators to increase the coverage area Keep in mind that one channel on one radiator will cover up to 10 000 ft 929 m line of sight when used with the LR 42 or LR 44 receivers Remember this coverage is cut in half every time the number of channels are doubled There is interference in my transmission In a multi channel system make sure that the transmitters are on different channels Also windows and sunlight can cause interference and noise on the receiver The audio drops out in areas I don t believe it should Audio drop outs can occur for several reasons including the following The system was set up by trial and error With degradation of the IR diodes the system now has dropouts due to this reduction in IR out

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